Software Developer III (Flutter / Poynt / Clover / Payment Terminal Apps)

Location: HQ (Ottawa, ON)

Department: Engineering

Reports To: Engineering Manager / CTO

Salary Range: $85,000 - $125,000

About CPOS

CPOS is building the next generation of payments infrastructure — fast, secure, and developer-friendly. Our platform helps businesses move money efficiently and with confidence. We move quickly, operate with ownership, and ship high-impact features that make payments smarter and simpler.

The Role

We’re looking for a Senior Software Developer who excels at breaking down ambiguous problems, proposing solutions, and driving them through to delivery. You’ll build and maintain production applications that run directly on payment terminals (Poynt and Clover) using Flutter, while owning critical integrations with vendor payment APIs and the terminal distribution stores (e.g., the Poynt App Store and Clover App Market).

This role expects initiative, technical depth, and strong communication. If you wait around for direction, need tasks spoon-fed, or expect daily check-ins before you can make progress, this won’t be a fit. You’ll work directly with Product, help shape roadmap-level technical decisions, and mentor junior engineers to raise the overall engineering bar.

What You’ll Do

• Own and improve complex on-terminal experiences using Flutter, targeting Poynt and Clover smart terminals (Android-based devices).
• Architect scalable integrations with vendor payment APIs (Poynt SDK / Poynt OS, Clover Android SDK / REST APIs), handling payments, refunds, tipping, receipts, and transaction lifecycle events.
• Build, package, and ship apps through the terminal distribution stores — managing app submissions, review requirements, and versioning across the Poynt App Store and Clover App Market.
• Integrate terminal apps with our AWS serverless backend (Lambda, API Gateway, DynamoDB) for sync, reporting, and remote configuration.
• Work directly with Product to translate problem statements into actionable solutions — identifying edge cases, constraints, and technical risks upfront.
• Lead technical design discussions, drive architectural decisions, and document them clearly.
• Prioritize proactively: identify blockers early, propose alternatives, and keep work moving without needing someone else to unblock you.
• Debug and resolve hard technical issues across the terminal hardware, payment SDK, and backend boundaries.
• Mentor less experienced developers through reviews, pairing, and structured guidance.
• Introduce and champion best practices in on-device performance, state management, testing, and payment security (PCI considerations).
• Contribute to internal tooling, shared libraries, and workflows to improve engineering efficiency.

Who You Are

• A self-sufficient problem solver — you research, test, and propose solutions before escalating.
• Strong at reasoning about terminal/mobile app architecture, data flows, performance considerations, and platform trade-offs.
• Excellent communicator who shares status early, calls out risks, and aligns with Product without hand-holding.
• Someone who raises the technical bar: you mentor others, drive improvements, and expect high standards.
• Equally comfortable building polished UI and diving into platform-level quirks (terminal packaging, payment SDK integration, device-specific and hardware peripheral issues).
• Thrives in a fast-paced environment where autonomy is expected, not optional.

Required Skills

• 4+ years of experience building production mobile or terminal applications.
• Strong experience with Flutter and Dart, shipping production apps to real devices.
• Hands-on experience integrating with payment hardware and vendor payment SDKs/APIs — ideally Poynt and/or Clover (Android-based smart terminals).
• Familiarity with app store / distribution processes for payment terminals (Poynt App Store, Clover App Market) including submission, review, and release management.
• Proficiency with AWS — ideally Lambda, API Gateway, DynamoDB, or similar serverless systems for backend integration.
• Deep understanding of application architecture, state management, performance tuning, and API interaction.
• Ability to own technical decisions, document them, and explain trade-offs clearly.
• Strong communication: crisp updates, clear escalation when needed, no vague “in progress” status.

Nice-to-Have

• Experience with mobile/terminal CI/CD pipelines, OTA updates, app store release automation, or native (Android) module bridging from Flutter.
• Familiarity with the underlying Android platform that Poynt and Clover devices run on.
• Background in fintech, payments, or regulated environments (PCI-DSS, EMV, tokenization).
• Prior experience mentoring or leading small engineering teams.
• Contributions to component libraries, tooling, or shared modules used across multiple teams.
• Knowledge of distributed systems, real-time updates, or offline-first patterns (important for terminals with intermittent connectivity).

Why You’ll Love Working Here

• High autonomy — you’ll shape features, influence architecture, and meaningfully impact product direction.
• Direct collaboration with product leadership and senior technical decision-makers.
• Ability to mentor, lead initiatives, and scale our terminal app platform across multiple device vendors.
• Modern ecosystem: Flutter, Dart, Poynt and Clover SDKs, Node.js, and AWS serverless.
• Competitive compensation with the opportunity to have real ownership in a scaling fintech.

Pay: $85,000.00-$125,000.00 per year

Benefits:

• Casual dress
• On-site parking
• Paid time off

Work Location: In person